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Some vague details of the antispam system in use at Twitter.
The main challenges in supporting this type of system are evaluating rules with low enough latency that they can run on the write path for Twitter’s main features (i.e., Tweets, Retweets, favorites, follows and messages), supporting computationally intense machine learning based rules, and providing Twitter engineers with the ability to modify and create new rules instantaneously.
(tags: spam realtime scaling twitter anti-spam botmaker rules)
EcoJel jellyfish identification card
To identify the jellyfish found in Irish waters — good, recognisable photos
(tags: jellyfish identification ecojel ireland sea swimming safety id-cards)